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WeatherCore

Library mod for registering custom weather conditions

NeoForge
Loaders
NeoForge
Downloads on Modrinth
526
Followers on Modrinth
0
versions
3
Updated
June 9, 2026Jun 9
Published
in 2026
This is a library — other mods need it, and it adds nothing to the game by itselfRequired by 1 mods. Download it if another mod needs it.

At a glance

A library: other mods need it — required by 1 mods
Runs on NeoForge
For Minecraft 1.21.1
Needed in the game and on the server
Latest version — 0.1.2 from June 9, 2026
License LGPL-3.0-only — free
Where it's needed
In gamerequiredOn serverrequired

Needed both in the game and on the server

Game versions1.21.1

WeatherCore

WeatherCore is an intrusive core library mod that overhauls Minecraft's hardcoded weather system, replacing it with a flexible weather system with the possibility of registering new weather types.

For users

Installed alone, this mod doesn't alter vanilla weather, but might alter the way Minecraft choose its next weather due to replacing the hardcoded weather timers with a complex weather management system.

Only install WeatherCore if a dependency requires it.

Key Features

  • Custom weather registry: Register custom weather conditions.
  • Weather management: Replaces vanilla's basic timers with a management system.
  • Scoping: A scope defines the zones a weather condition affects inside a level. Weather themselves are not "aware" of what scopes they own so any custom weather conditions can be summoned globally or centered.
  • Replaces /weather command and adds a /toggledownfall command.

Weather scopes

Any custom weather condition created with this library will own a scope when summoned. It can either be:

  • Global Scope (dimension wide)

    • Perfect for vanilla style weathers
    • Affects the entire dimension
  • Centered

    • Ideal for events, like a fallout after a nuclear explosion or a cursed fog after activating a mysterious monolith.
    • Good for letting players decorate their builds
    • Maybe good for tornadoes? Why not use entities instead?

Development

WeatherCore is currently under active development and is mostly bespoke to my own projects. I am looking for feedback from other developers to make the mod more universally useful and ensure it integrates smoothly with other mods.

If you want to use WeatherCore, use the artifact from Modrinth's maven:

repositories {
    maven {
        name = "Modrinth"
        url = "https://api.modrinth.com/maven"
    }
}

dependencies {
    modImplementation "maven.modrinth:weathercore:mc1.21.1-0.1.0"
}

Credits

The icon of WeatherCore and Weather Extended is made by anyputer

FAQ

How to install WeatherCore?

Install NeoForge for your Minecraft version, download WeatherCore for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does WeatherCore support?

WeatherCore has builds for Minecraft 1.21.1.

Is WeatherCore needed on the server?

Needed in the game and on the server

License and source
GNU Lesser General Public License v3.0 onlyfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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